SHOCK COMPRESSION PROCESSING OF POWDERS
作者:
N.N. Thadhani,
期刊:
Advanced Materials and Manufacturing Processes
(Taylor Available online 1988)
卷期:
Volume 3,
issue 4
页码: 493-549
ISSN:0898-2090
年代: 1988
DOI:10.1080/10426918808953217
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Shock compression processing is emerging as a novel technique for fabrication of esoteric materials. Not only can metal and ceramic powders be dynamically consolidated, but both equilibrium and non-equilibrium structures can be synthesized under the high pressure regime during the passage of shock waves of sufficient magnitude and duration. The shock waves can be generated by impact from a plate (accelerated by compressed gas or detonation of explosive) or direct contact with explosives. Very hard metallic and ceramic powders, as well as those powders that cannot be processed by conventional powder processing techniques can be easily compacted to solid densities. The bonding mechanisms in shock compaction involve the rapid and intense deposition of shock energy, preferentially at interparticle regions, resulting in extensive plastic deformation. This may lead to interparticle welding due to partial melting or simply solid-state diffusional bonding.
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